9847197947 has 2 divisors, whose sum is σ = 9847197948. Its totient is φ = 9847197946.

The previous prime is 9847197917. The next prime is 9847197949. The reversal of 9847197947 is 7497917489.

It is a happy number.

9847197947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9847197947 - 2⁶ = 9847197883 is a prime.

Together with 9847197949, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9847197949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4923598973 + 4923598974.

It is an arithmetic number, because the mean of its divisors is an integer number (4923598974).

Almost surely, 2^9847197947 is an apocalyptic number.

9847197947 is a deficient number, since it is larger than the sum of its proper divisors (1).

9847197947 is an equidigital number, since it uses as much as digits as its factorization.

9847197947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32006016, while the sum is 65.

The square root of 9847197947 is about 99233.0486632352. The cubic root of 9847197947 is about 2143.4049172782.

The spelling of 9847197947 in words is "nine billion, eight hundred forty-seven million, one hundred ninety-seven thousand, nine hundred forty-seven".